55T SERIES

COUNTERBALANCE VALVE

CARTRIDGET SERIES CAVITY, INT. VENTED

Description

A CARTRIDGE STYLE, THREE PORT, PILOT TO OPEN COUNTERBALANCE VALVE WITH AN INTERNALLY VENTED SPRING CHAMBER AND FREE REVERSE FLOW CHECK, INTENDED FOR MOTION CONTROL AND OVER-CENTER LOAD HOLDING APPLICATIONS.

Product Rendering

Schematic

Operation

  • BACK PRESSURE AT PORT (2) IS ADDITIVE TO RELIEF SETTING.
  • FLOW FROM (1) TO (2) IS BLOCKED UNTIL THE RELIEF PRESSURE SETTING HAS BEEN EXCEEDED.
  • FLOW FROM (1) TO (2) IS BLOCKED UNTIL A PILOT PRESSURE INVERSELY PROPORTIONAL TO THE LOAD PRESSURE IS APPLIED TO THE PILOT PORT.
  • FLOW FROM (2) TO (1) IS ALLOWED WITH A STANDARD CRACK PRESSURE OF 25 PSI.

Features

  • PILOT RATIOS UP TO 10:1 AVAILABLE (HIGHER PILOT RATIOS MAY REDUCE FLOW CAPACITY)
  • LOW RELIEF HYSTERESIS.
  • QUIET, STABLE OPERATION.
  • SEALED PILOT PISTON, LOW INTERNAL LEAKAGE.
  • ADJUSTABLE WITH LOCKING NUT.
  • CLOCKWISE ADJUSTMENT TO INCREASE RELIEF SETTING.

Specifications

INTERNAL LEAKAGE 5 DROPS/MIN. MAX.
OPERATING PRESSURE 5000 PSI
RELIEF SETTING RANGE 500 - 5000 PSI
RELIEF TOLERANCE +/- 10%
STANDARD CRACK PRESSURE 25 PSI
TEMPERATURE RANGE 250°F TO -40°F

Ordering Information

MODELTHREADFLOW CAPACITYCAVITYL1L2 (MAX.)HEXABCSD (MAX.)TORQUE
55T163M16 X 1.55.0 GPMT-163A1.221.800.7500.512 /
0.513
0.653 /
0.654
0.700 /
0.701
0.65020 ft-lbs
55T11M20 X 1.515.0 GPMT-11A1.382.250.9380.683 /
0.685
0.807 /
0.809
0.855 /
0.857
0.85030 ft-lbs
55T21-1425.0 GPMT-2A1.382.501.1250.871 /
0.873
1.027 /
1.029
1.074 /
1.076
0.87045 ft-lbs

MODEL

THREAD

FLOW CAPACITY

CAVITY

L1

L2 (MAX.)

HEX

A

B

C

SD (MAX.)

TORQUE

MODEL

THREAD

FLOW CAPACITY

CAVITY

L1

L2 (MAX.)

HEX

A

B

C

SD (MAX.)

TORQUE

MODEL

THREAD

FLOW CAPACITY

CAVITY

L1

L2 (MAX.)

HEX

A

B

C

SD (MAX.)

TORQUE

55T163View More

M16 X 1.5

5.0 GPM

T-163A

1.22

1.80

0.750

0.512 / 0.513

0.653 / 0.654

0.700 / 0.701

0.650

20 ft-lbs

55T11View More

M20 X 1.5

15.0 GPM

T-11A

1.38

2.25

0.938

0.683 / 0.685

0.807 / 0.809

0.855 / 0.857

0.850

30 ft-lbs

55T2View More

1-14

25.0 GPM

T-2A

1.38

2.50

1.125

0.871 / 0.873

1.027 / 1.029

1.074 / 1.076

0.870

45 ft-lbs